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參數資料
| 型號： | RF212-11 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Image-Reject Front End for Dual or Tri-Band GSM Applications |
| 中文描述： | 鏡像抑制前端雙或三頻GSM應用 |
| 文件頁數： | 3/9頁 |
| 文件大小： | 89K |
| 代理商： | RF212-11 |
Image-Reject Front End
RF212
100956A
May 18, 2000
Conexant – Preliminary
3
Proprietary Information and Specifications are Subject to Change
Table 1. RF212 Dual-Band Selection
BANDSEL1, pin 14
Mode
0
EGSM900
1
DCS1800
Table 2. RF212 Tri-Band Selection
BANDSEL1, pin 14
BANDSEL2, pin 15
Mode
0
0
0
1
EGSM900
1
0
DCS1800
1
1
PCS1900
Table 3. RF212 Dual-Band Device Signal Description
Pin #
Name
Description
Pin #
Name
Description
1
NC
No connect (recommend connecting to
ground)
11
NC
No connect (recommend connecting to
ground)
2
GND
Ground
12
LOGND
LO input ground
3
GND
Ground
13
LOIN
LO input
4
LNA900IN
900 MHz LNA input
14
BANDSEL1
Band select control
5
VCC
Supply
15
GND
Ground
6
VCC
Supply
16
IFOUT
Mixer negative output
7
GAINSEL
LNA gain select
17
IFOUT+
Mixer positive output
8
LNA1800IN
1800 MHz LNA input
18
STEPSEL
Gain step select. STEPSEL= 0 selects a
12 dB gain step; STEPSEL = 1 selects a
20 dB gain step
9
GND
Ground
19
GND
Ground
10
ENA
Device enable, active high
20
VCC
Supply
Table 4. RF212 Tri-Band Device Signal Description
Pin #
Name
Description
Pin #
Name
Description
1
NC
No connect (recommend connecting to
ground)
11
NC
No connect (recommend connecting to
ground)
2
GND
Ground
12
LOGND
LO input ground
3
GND
Ground
13
LOIN
LO input
4
LNA900IN
900 MHz LNA input
14
BANDSEL1
Band select control 1
5
VCC
Supply
15
BANDSEL2
Band select control 2
6
VCC
Supply
16
IFOUT
Mixer negative output
7
GAINSEL
LNA gain select
17
IFOUT+
Mixer positive output
8
LNA1800IN
1800 MHz LNA input
18
STEPSEL
Gain step select. STEPSEL= 0 selects a
12 dB gain step; STEPSEL = 1 selects a
20 dB gain step
9
LNA1900IN
1900 MHz LNA input
19
GND
Ground
10
ENA
Device enable, active high
20
VCC
Supply
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